부산대학교 도서관

Nickel doped bismuth vanadate [ $$\hbox {Bi}_{4}(\hbox {V}_{0.90}\hbox {Ni}_{0.10})_{2}\hbox {O}_{11- \delta }$$ ;BINIVOX] calcined at $$800\,{^{\circ }}\hbox {C}$$ (BINIVOX-800) catalyst is prepared by a solution combustion method. The catalytic activity study is carried in the temperature range of 250- $$400\,{^{\circ }}\hbox {C}$$ , and with the molar feed ratios of water: ethanol at 23:1 and 2.5:1. The study reveals an increase in the ethanol conversion and selectivity of carbon dioxide & hydrogen but a decrease in the selectivity of carbon monoxide and methane with an increase in temperature and water: ethanol mole ratio. Fresh and used catalysts are characterized using DTA, TGA, XRD and FTIR. XRD results reveal that the fresh catalyst is phase pure $$\upgamma $$ -BINIVOX. The phase purity and crystallinity of the catalyst is retained after 30 h of activity study. Graphical Abstract : Catalytic activity of nickel-doped bismuth vanadate (BINIVOX) powder for hydrogen production from ethanol via low-temperature steam reforming is reported here. Preliminary results show an increase in ethanol conversion and selectivity of carbon dioxide and hydrogen with temperature and water: ethanol mole ratio. [ABSTRACT FROM AUTHOR]